package com.ruoyi.framework.config.properties;

import com.ruoyi.common.annotation.Anonymous;
import org.apache.commons.lang3.RegExUtils;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.annotation.AnnotationUtils;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.mvc.method.RequestMappingInfo;
import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping;

import java.util.*;
import java.util.regex.Pattern;

@Configuration
public class PermitAllUrlProperties implements InitializingBean, ApplicationContextAware {

    private static final Pattern PATTERN = Pattern.compile("\\{(.*?)\\}");

    private ApplicationContext applicationContext;

    private List<String> urls = new ArrayList<>();

    public String ASTERISK = "*";

    @Override
    public void afterPropertiesSet() throws Exception {
        RequestMappingHandlerMapping mapping = applicationContext.getBean(RequestMappingHandlerMapping.class);
        Map<RequestMappingInfo, HandlerMethod> map = mapping.getHandlerMethods();

        map.keySet().forEach(info -> {
            HandlerMethod handlerMethod = map.get(info);

            // 获取方法Method上边的注解 替代 path variable
            Anonymous method = AnnotationUtils.findAnnotation(handlerMethod.getMethod(), Anonymous.class);
            Optional.ofNullable(method).ifPresent(anonymous ->
                    Objects.requireNonNull(info.getPatternsCondition().getPatterns())
                            .forEach(url->urls.add(RegExUtils.replaceAll(url, PATTERN, ASTERISK))));

            // 获取类BeanType上的注解，替代 path variable 为 *
            Anonymous controller = AnnotationUtils.findAnnotation(handlerMethod.getBeanType(), Anonymous.class);
            Optional.ofNullable(controller).ifPresent(anonymous ->
                    Objects.requireNonNull(info.getPatternsCondition().getPatterns())
                            .forEach(url->urls.add(RegExUtils.replaceAll(url, PATTERN, ASTERISK))));
        });
    }

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException
    {
        this.applicationContext = applicationContext;
    }

    public List<String> getUrls(){return urls;}

    public void setUrls(List<String> urls) {this.urls = urls;}
}
